Cronosurf Wave - Chronograph · Cronosurf Wave in a very short time. Tap on the area above the watch to activate it. A second tap shows information fields below the watch, and a third

v.2.5.x - 20190914

Cronosurf WaveWelcome to the Android version of Cronosurf Wave! This app is based on the original

design started 2014 as a web-based technology demonstrator (see cronosurf.com). It

offers the same functionality as the web version plus some extra features.

Getting started

The Button Assistant function - already known from the Cronosurf website -

that labels each button according to the momentary state of the watch, is

now integrated in the app (portrait mode only). Use it for quickly getting

familiarized with the basic functionality. To activate it, simply tap on the

area above the watch.

Table of contents

1. General

1.1. Basic features

1.2. Parts of the watch

1.3. Audible Signals

1.4. Vibration

1.5. Settable Modes

1.6. The 24-Hour Dial

1.7. Button Assistant

1.8. Invisible touch areas

1.9. Graphical Menu

1.10. Android specific

Android Lock Screen

Hardware volume buttons

Proximity sensor

Live Wallpaper

Graphics

5 Second limit

Automatic restore function

1.11. Wear OS specific

Independent use

Swiping and dragging

Minimalist ambient mode

Party mode (only PRO version)

Button lock (only PRO version)

Long pressing

2. Using Cronosurf

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2.1. Watch Modes

Time Mode (TME)

Stopwatch Mode (SW)

Countdown Timer Mode (CD)

Alarm Mode (AL)

World Time Mode (WT)

2.2. Date and Day

2.3. Week number

2.4. Calendar

Calendar for the current month

Calendar for any month from 1940 to 2039

2.5. Moon phases

2.6. Weather information (only PRO version)

2.7. Compass

Starting the compass

Exiting the compass

Reference pointer (only PRO version)

2.8. Presets for alarm and countdown

2.9. Battery level indicators

2.10. Screen-On timer

3. Disclaimer

1. General

1.1. Basic features

12-Hour Stopwatch/Chronometer with 1/20 of a second resolution

12-Hour Countdown-Timer with optional automatic repetition

Daily/Once Alarm with optional gradual volume

Optional vibration for alarm and countdown signals

Customizable presets for often used alarm and countdown times

World Time with 15-minute steps

Date and day of the week - and the unique Cronosurf's monthly calendar

Innovative 100-year-Calendar

Week number

Indication of moon phases (full moon and new moon)

Compass (when supported by device)

3 battery level indicators

Screen-On timer

Adjustable motion mode of the second hand: pulse (1/sec) or sweep (5/sec)

Can run as a Live Wallpaper on Android - with basic interactivity and adjustable

background color

Supports Wear OS

WEAR: Auto-Return to TME mode after 1 minute (except when the screen-on timer

is active); press [B] for 1 second to disable until next mode change

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Lots of extra functionality that you've probably never seen on other chronographs

PRO version features

Ad-free

5 customizable highlight colors

4 instead of 2 presets each for alarm and countdown timer

QuickStopwatch function

Split function for the stopwatch

Flyback function for the stopwatch

Reference pointer for the compass

[NEW] Weather information for a user defined location

For the Live Wallpaper, any image from the gallery can be set as a background

image

Landscape mode

[NEW] WEAR: Automatic switching of night modes via light sensor or

sunset/sunrise times

WEAR: Optional hourly chime

WEAR: Party Mode (automatic color change every 3 minutes)

WEAR: The info box shows the watch temperature

WEAR: Button lock

1.2. Parts of the watch

The following figure shows the main parts of the watch and the operation buttons:

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Figure 1. Parts of the watch

Press button [A] to change the watch mode clockwise and [B] to change it counter-

clockwise. The function of the buttons [C], [D] and [SET] are mode dependent.

Long-pressing of buttons

In some situations, specific buttons have a special function when they are

pressed and held down for at least one second. This will be referred to in

this manual sometimes simply as a long-press.

Situational awareness

When reading the watch, we recommend always taking the first glance at

the mode indicator in order to be aware of the current mode (and possibly

submode) and therefore of what the main hands are indicating. We also

recommend often controlling the alarm ON/OFF state, which is shown by

the decimals hand in all modes except SW and CD.

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1.3. Audible Signals

There are five different audible signals:

Single beep, normal pitch:

confirms the START function in both SW and CD modes

confirms turning the alarm ON/OFF

confirms the activation of the CD operating mode "1x"

Indicates entering a submode

Single beep, high pitch:

confirms the STOP and RESET functions in both SW and CD modes

indicates finishing exiting a submode

confirms the return to the time mode upon long-pressing button [A]

confirms the split release in SW mode (only PRO version)

Two beeps in rapid succession, normal pitch:

confirm that the CD operating mode is Infinite (either upon mode activation

or at every start of the countdown)

confirm the split time measurement while in SW mode (only PRO version)

Two beeps, normal pitch, repeating every 1.5 seconds:

countdown alarm (30 seconds long*)

Four beeps in rapid succession, normal pitch, repeating every 2 seconds:

regular alarm (30 seconds long*)

regular Alarm with gradual volume (will fade in during the first 20 seconds

and continue for another 30 seconds*)

* You may cancel the countdown or regular alarm signal by either pressing

any button or by tapping on the watch face. When doing so, the original

function of the button or touch area will be suppressed.

Alternatively, you may cancel the signal by pressing one of the volume

buttons of the device, or by placing the hand near the proximity sensor

next to the earpiece (only phones).

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1.4. Vibration

By default, the alarm and the countdown timer signals are only audible ("Beep only"). It

is now possible to change this setting to "Vibrate only" or "Both". These settings can take

into account different situations like loud or silent environments, or devices which

have only either sound or vibration.

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1.5. Settable Modes

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The following main modes have time settings that can be changed by the user:

CD (Countdown Timer)

AL (Alarm)

WT (World Time)

This is accomplished through set submodes which are activated by pressing the [SET]

button. A single beep will be heard and the hand to be set will shortly perform a

wiggling motion. Now, press buttons [C] or [D] as needed to change the value of the

active hand. Holding the button pressed will continuously change the value. Once the

desired value has been reached, press button [SET] again to proceed with the next

hand. After the last hand is set, pressing button [SET] once more will exit the set

submode. This will be confirmed by a high pitched beep.

Depending on the preference setting for the set buttons (advanced

preferences), its operation direction may be either logic ( [C] + / [D] - ) or

geometric ( [C] CCW / [D] CW ).

Note: Each of the settable modes has a small circle on the mode dial (see Figure 1.).

The mode hand will advance to this position to indicate that the set submode is active.

Note: If during the setting procedure one of the buttons [A] or [B] is pressed, the

settings up to this point will be accepted, a confirmation high pitched beep will be

heard and the mode will change as commanded.

Note: The watch will automatically exit the set-submode after a timeout of 90 seconds

of inactivity.

As an alternative, the active hand can also be set by dragging with the

finger on the central area of the watch face (see chapter Invisible touch

areas).

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1.6. The 24-Hour Dial

One distinctive characteristic of Cronosurf Wave is its 24-hour sub-dial which shows the

24-hour position at the bottom, unlike most other chronographs where it appears at the

top. We believe that this approach, with noon at the top and midnight at the bottom,

is more intuitive and informative, since the hour hand corresponds approximately to

the sun position as seen when facing south. For this reason, the 24-hour hand has a

small circle on it symbolizing the sun.

This dial shows the World Time when in TME mode. In all other modes however (even

in calendar submode), it shows the Local Time. This means that, regardless of the

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active mode, you will always see the Local Time either on the main dial or on the 24-

hour dial.

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1.7. Button Assistant

The Button Assistant shows the function of each button dynamically, depending on the

current state of the watch. This will help you to get familiar with the operation of

Cronosurf Wave in a very short time. Tap on the area above the watch to activate it. A

second tap shows information fields below the watch, and a third tap deactivates again

the assistant.

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1.8. Invisible touch areas

Apart from the obvious touch areas for the five operation buttons and the three icons

below the watch, there are some invisible touch areas that can be used as follows (see

Figure 2.):

Large circular area

Tap to stop the alarm and countdown sound.

When in set submode, drag with the finger in a circular motion to set the

active hand. (Not available on Wear OS.)

Small circular area

Tap to call the graphical menu.

Small rectangular area at the bottom (Zeroize area)

When in set submode, tap to zeroize the active hand:

Countdown: Sets the active hand to zero.

Alarm: Sets the minute hand to zero when active.

World Time: Sets the time offset to zero.

When in calendar submode, tap to return to current month.

Rectangular area above the watch

Tap inside this area to toggle the Button Assistant.

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Figure 2. Invisible touch areas

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1.9. Graphical Menu

Touch on the center of the watch face to open the graphical menu. It gives quick

access to often used functions, like changing the highlight color (PRO version) or

toggling the Screen-On timer. It consists of a 3x3 grid with different buttons that

depend on the version (free/PRO) and on the type of device.

The graphical menu of Cronosurf was introduced as a user interface on smartwatches,

but is now also available on the regular app for a more consistent user experience.

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1.10. Android specific

Android Lock Screen

If you turn on your device and the (standard) Lock Screen is active, Cronosurf will

nevertheless run on top of the Lock Screen, provided it was in the foreground before

turning the device off. This is a feature that allows you to quickly access and operate

Cronosurf without having to unlock the device. To access the Lock Screen, just press

the HOME or BACK button on your device.

Hardware volume buttons

There are two situations in which Cronosurf reacts to the physical volume buttons:

While in stopwatch mode (SW) ➔ Volume up/down buttons map buttons [C]/[D]

respectively.

During the countdown or alarm signals ➔ Pressing any of the volume buttons will

cancel the ongoing signal.

Proximity sensor

Most Android phones are equipped with a proximity sensor next to the earpiece. This

sensor will be active during an ongoing countdown or alarm signal and can be used to

stop the signal by simply placing the hand a few centimeters over the phone (near the

earpiece).

Live Wallpaper

Cronosurf can also run as a Live Wallpaper (LWP) on the homescreen (we preferred the

LWP over the Widget, because of the inferior graphical performance of the latter). It

offers basic interactivity which includes positioning and resizing of the watch as

needed, changing the watch mode and starting the main app. In order to avoid

inadvertent operation, the interactivity needs to be activated. To do so, tap on the

center of the watch face. The controls will become visible, and after 2 to 3 seconds of

inactivity, the interactivity will be disabled again automatically.

The procedure to set Cronosurf as an LWP is the same as for any other LWP. This may

vary depending on your Android Device. The standard method is to long-press on an

empty area on the homescreen and then select "Live Wallpapers".

Moreover, the standard Android Lock Screen shows the active LWP in the background,

which lets you see the Cronosurf LWP without having to unlock the screen. However,

some devices may have different implementations of the Lock Screen which require a

special procedure or an external app to accomplish this, or do not allow it at all.

Graphics

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The graphical animation works most of the time at 5 frames per second. This is good

enough even for the sweep motion of the second hand. Only when the hands have to

move quickly by a large amount, the frame rate goes temporarily up to 40 frames/s.

This is also the case during the smooth animation phases that are used in the SW and CD

modes. In sum, Cronosurf is designed to have low graphical performance requirements.

5 Second limit

Starting with Android 5 (Lollipop), the operating system does not allow alarm events

less than 5 seconds ahead. Because of this, this is also the minimum countdown time

that Cronosurf allows to set on devices running on Lollipop or later.

Automatic restore function

After rebooting the device, Cronosurf will reactivate automatically any pending alarm

and/or countdown-timer.

1.11. Wear OS specific

Independent use

Cronosurf Wave runs on Wear OS watches as a standalone watchface and is independent

from the app on the main Android device. All preferences can be set on the watch

directly except for editing the predefined colors (this exception concerns only the PRO

version).

Swiping and dragging

Swiping and dragging is reserved for the system and is therefore not available for the

operation of the watchface.

Minimalist ambient mode

This option activates a very simple ambient mode in which the graphics are reduced to

practically only the hour and minute hands. On some watches, this option can further

reduce the battery consumption.

Party mode (only PRO version)

This mode automatically changes the highlight color of the watch face randomly once

every 3 minutes. You can enable it through the graphical menu by pressing the upper

left button for 1 second. Press it again for 1 second to disable it. Otherwise, it will

disable itself automatically after 12 hours.

Button lock (only PRO version)

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In order to avoid unintentional operation of the watch (e.g. when crossing the arms),

the screen buttons can be locked. On the graphical menu, press the lower left button

(with the lock symbol) for 1 second to activate the button lock. A small lock symbol

will appear on the watchface. To deactivate the lock, press on the lock symbol and

press then on the appearing unlock symbol.

Long pressing

A long press (1 second or more) on the central circular area (a circle with

approximately half the screen radius) is reserved on some Wear OS versions for calling

the list of available watchfaces. This can sometimes interfere when you try to long-

press one of the buttons on the graphical menu. To avoid this, simply press closer to

the screen border.

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2. Using Cronosurf

2.1. Watch Modes

Time Mode (TME)

This is the basic watch mode for Local Time keeping with conventional hands for hours,

minutes and seconds on the main dial (12 hour dial). When in this mode, the 24-hour

dial indicates the World Time, whereas the second-decimals hand shows the state of

the alarm (ON or OFF).

With the help of the date indicator, you can easily determine whether the indicated

time corresponds to AM or PM. (See below Date and Day.)

Shortcut

To return to the time mode from any other mode, press button [A] for 1

second.

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Stopwatch Mode (SW)

The stopwatch or chronometer mode offers a time measuring function from 0 to 12

hours. While the hours, minutes and seconds are shown by the big hands on the main

dial, the small dial on the bottom shows the decimals of a second. On this dial, half

decimals can be indicated which leads to a resolution of 1/20 of a second (0.05

seconds).

Press button [C] to start and stop the stopwatch. While stopped, press button [D] in

order to reset the hands to the zero position. The operation START is confirmed by a

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normal pitched beep, while the the operations STOP and RESET are confirmed by a

high pitched beep.

During the first five minutes, the second hand will be driven smoothly (high frame rate)

and the second-decimals hand will run continuously. After this period of time, the

stopwatch will change into the power saving mode. In this mode, the second hand will

move in the regular sweep mode or one-second-step fashion (depending on the setting

under advanced preferences), and the second-decimals hand will be parked at the zero

position. Once the stopwatch is stopped, the second-decimals hand will move to the

value that corresponds to the time measurement.

If you change to another mode while the stopwatch is running, the time measurement

will continue to work internally. Since it is based on timestamps, even rebooting the

device will not affect the accuracy of the time measurement.

QuickStopwatch function (only PRO version)

When the "QuickStopwatch" function is enabled (advanced preferences),

pressing button [C] while in time mode (TME) will immediately change the

mode to SW, reset the stopwatch if needed and start it. In case the

stopwatch was already running, only the mode will change to SW and the

current measurement will continue.

Flyback function (only PRO version)

Press button [D] in SW mode when the stopwatch is running to stop, reset

and restart the stopwatch at once. This function is often used by pilots. It is

useful to perform repeated time measurements or to immediately correct

the start of a time measurement in case of error - with one push of the

button, instead of three.

The flyback function is also known by these names:

Taylor system

Permanent zero setting

Retour-en-vol (French)

Split function (only PRO version)

While the stopwatch is running, you may measure a split time by pressing

[SET]. This will be confirmed by two beeps in rapid succession at normal

pitch and by the mode hand pointing at the 'S' of SW (stands for Split). The

stopwatch hands pause to show the split time, but the stopwatch continues

to run in the background.

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Press [SET] again to release the split time. This is confirmed by a high

pitched beep.

To measure cumulative split times:

  [C] ➔ [SET] ➔ [SET] * ➔ [C] ➔ [D]

  START SPLIT SPLIT RELEASE STOP RESET

  * Repeat SPLIT ➔ SPLIT RELEASE as needed

To measure two times, like the finishes of two runners:

  [C] ➔ [SET] ➔ [C] ➔ [SET] ➔ [D]

  START SPLIT

1st runner finishes

Display 1st time

STOP

2nd runner finishes

SPLIT RELEASE

Display 2nd time

RESET

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Countdown Timer Mode (CD)

The countdown timer gives an audible signal after a predefined time that can be set

between 1 second (or 5 seconds if on Android 5 or later - see 5 Second limit) and 12

hours.

Press button [C] to start and stop the timer. While stopped, press button [D] to reset

the hands to the preset countdown time. The operation START is confirmed by a normal

pitched beep, while the the operations STOP and RESET are confirmed by a high

pitched beep.

To set the countdown timer, press button [SET] while the timer is stopped. The hour

hand will shortly wiggle. Change its value with buttons [C] and [D] as needed. Repeat

the procedure for the minutes and second hand. Pressing [SET] once again finishes the

setting procedure which is confirmed by a high pitched beep.

The countdown timer has two different modes, "1x" and "∞":

Mode 1x (once): Once the countdown has been completed, the audible CD alarm

will be heard (2 normal pitched beeps every 1.5 seconds) during 30 seconds,

unless it is confirmed by pressing any button. After this, the CD will be

automatically reset and be ready for its next use.

Mode ∞ (repeat infinitely): The timer will reset itself automatically and run from

the beginning in an endless loop. Each time a countdown cycle is completed,

there will be only one CD audible signal cycle (2 normal pitched beeps).

The current mode is indicated by the second-decimals hand (only when in CD mode).

To change between 1x and ∞ modes, press button [D] while the timer is running.

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During the first 60 seconds after start and the last 5 minutes of a countdown period, the

second hand will be driven smoothly. Outside of these periods of time, the countdown

timer will change into the power saving mode. In this mode, the second hand will be

moved in a one-second-step fashion (or sweep depending on the setting under

advanced preferences).

If you change to another mode while the countdown timer is running, it will continue

to run internally and the audible signal will be heard after the countdown has been

completed. Even if the device is rebooted, a pending countdown will be resumed

accordingly.

Shortcut to 5 or 10 minutes

To quickly set the CD time to 5 or 10 minutes, long-press button [SET] in CD

mode whenever the timer is not running or while in set submode. The

setting will alternate between 5 and 10 minutes at each long-press.

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Alarm Mode (AL)

The alarm mode offers a 24-hour alarm. The alarm time is indicated on the main dial.

As in the normal keeping mode, refer to the date indicator to differentiate between AM

and PM.

A unique feature of Cronosurf is the indication of the remaining time till the next

alarm, which naturally can be in the range from 0 to 24 hours. This is indicated by the

second hand by pointing anywhere between the 0 and 24 position on the second scale.

As a graphical reminder, the latter position is labeled with '24H'.

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The alarm status ON/OFF is indicated by the second-decimals hand at any time except

when in SW and CD modes. When in alarm mode, but outside of the set submode, press

button [C] to switch the alarm ON or OFF.

To set the alarm time, press button [SET]. The hour hand will shortly wiggle. Adjust as

needed with buttons [C] and [D] and press [SET] again. Now adjust the minute hand.

Pressing [SET] once again finishes the setting procedure which is confirmed by a high

pitched beep. Note that as soon as any hand is adjusted, the alarm will be

automatically switched on.

Shortcut

Press button [SET] for 1 second while in alarm set submode to quickly set

the alarm time to the current Local Time plus two minutes. The second

hand will reflect this by pointing at the 12 o'clock position, meaning that

the alarm will sound shortly (less than two minutes). From here, you can

further set the alarm time as you need. This comes in handy if the alarm

time that you want to set is close to the current Local Time or you simply

want to test the alarm.

Depending on the preference setting "Repeat alarm daily", the alarm will repeat daily

or sound only once, after which it will change to the status OFF automatically.

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World Time Mode (WT)

When in World Time mode, the main dial will show the user defined World Time. By

default, it will be the UTC time (Universal Time Coordinated), but it can be set to show

any desired fixed offset between -26 and +26 hours in 15-minute steps relative to the

Local Time (now indicated by the 24-hour dial). The 15-minute steps are needed for

some countries that have an extra 15 or 45 minutes offset to UTC.

Refer to the date indicator to differentiate between AM and PM and to monitor the

date of the World Time, which can deviate by up to +/-2 days from the Local Time

date.

To set a fixed offset for the World Time, press the [SET] button. The hour hand will

shortly wiggle. Adjust it as needed with buttons [C] and [D] and press [SET] again. Now

adjust the minute hand as needed in 15-minute steps. Pressing [SET] once again finishes

the setting procedure which is confirmed by a high pitched beep.

UTC Time

Press button [SET] for 1 second while in World Time set submode to reset

the World Time to UTC. Note that the UTC time is a special setting and its

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offset to the Local Time can be variable. The correct indication of UTC and

Local Time relies on the proper time and timezone settings of the device at

system level.

Shortcut for zero offset (World Time = Local Time)

While setting the hour hand, you may quickly set the World Time to the

Local Time by a tap on the zeroize area (see chapter Invisible touch areas).

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2.2. Date and Day

The two outer rings on the main dial show the date (1-31) and the day of the week

(first letter). Both are indicated at the 12 o'clock position by the date pointer (the

triangular shape at the 12 o'clock position). Since the date rings turn steplessly, the

date pointer gives a hint of the time of the day. Around midday, the date pointer will

be centered on the day.

Furthermore, the rings show a practical overview of all days of the current month,

which can be used as a one-month calendar.

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2.3. Week number

Press and hold [SET] when in TME mode to consult the current week number based on

Local Time. The minute hand will point to the corresponding number on the minute

scale for as long as the button is pressed. The shown number can be in the range 1

through 53.

There are different week numbering standards worldwide. By default, Cronosurf uses

the numbering that corresponds to the language/country that is set in the system

settings. Under advanced preferences, you may change this setting (Auto) to ISO-8601

standard (most countries) or to US standard.

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2.4. Calendar

The Calendar is a submode of the time mode (TME) and offers a complete 100-year-

Calendar for the years 1940 to 2039.

Calendar for the current month

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Pressing button [SET] while in TME mode will enter the Calendar submode. The mode

hand will point to the small 'C' which stands for calendar. Upon entering this submode,

the calender will start always at the current date. The date and day of the week are

still indicated at the 12 o'clock position as in TME mode. But now, the year, month and

last day of the month are additionally shown.

The current year is indicated by its two last digits. The possible range of 100 years

begins at 1940. Therefore, 40 stands for 1940, 00 for 2000 and 39 for 2039.

The second-decimals hand (lower sub-dial) indicates the tens digit of the year, whereas

the hour hand on the main dial indicates the ones digit. Both can point to a number

between 0 and 9 (the 12 position on the hour scale corresponds to 0). Example: For the

year 2014, the second-decimals hand points to 1 and the hour hand to 4 (see Figure 3.).

The current month is indicated by the minute hand on the main dial. The positions 1 to

12 correspond to the months January to December.

The second hand points toward the last day of the month on the date rings. This can be

any day from 28 to 31.

The 24-hour dial shows the Local Time.

So in summary, you have the complete date and time at one glance as follows:

Second-decimals hand (bottom dial) = tens digit of the year

Hour hand (main dial) = ones digit of the year

Minute hand (main dial) = month

Second hand (on date rings) = last day of the month

24-hour dial = Local Time

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Figure 3. Calendar example: Friday the 5th of September, 2014

In order to remember the hand sequence for the year and month easily, the same

principle of conventional hour and minute hands can be used: small hands represent

big values. Therefore, the smallest hand, i.e. the decimals hand, represents the biggest

value: the tens digit of the year. You can also make this mental note: Minute = Month.

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Calendar for any month from 1940 to 2039

From here, pressing buttons [C] or [D] will increase or decrease the date by one month

respectively. Holding the button pressed will change the year instead. This will take

you to any desired month between January 1940 and December 2039. Note that this

does not change the watch date, it merely lets you browse the calendar.

For any month other than the current month, the Date and Day Rings will turn such that

the 1st of the month is always at the 12 o'clock position.

To exit the Calendar, press button [SET] once again or change the watch mode by

pressing [A] or [B].

Note: The watch will automatically exit the calendar submode after a timeout of 90

seconds of inactivity.

Digital year indication

In case that the digital battery indicator is active (under preferences), this

indicator will show the year of the calendar digitally when the calendar

submode is active.

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2.5. Moon phases

Both full moon and new moon days are indicated on the date ring. A filled circle and

an outlined circle will be shown respectively. The date at which each event occurs

depends on the current time zone of the device. Therefore, changing the timezone can

sometimes lead to a change of a given moon event by up to two days.

The indication of the moon phases will persist in the calendar month. This enables you

to see all past and future moon phases within the full 100 year range of the calendar.

By default, this function is enabled, but you may disable it through the preferences.

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2.6. Weather information (only PRO version)

Cronosurf can retrieve and show the following weather information from the Internet

for a city of your choice:

Temperature

Relative humidity

Sunrise and sunset times

Time to next sunrise or sunset event

Day length

By default, the weather information function is disabled. Enable it in the preferences

by going to WEATHER INFO and setting the Data option to either "Temperature +

sunrise/sunset" or "Only sunrise/sunset". Then, enter the place of your choice under

"Location". The app can also store a standby location for quick access. Tap on the

standby location entry in order to swap the locations.

Once the function is enabled and a location is set, Cronosurf will show the temperature

on the right digital indicator (unless you chose "Only sunrise/sunset").

While in TME mode and when the temperature is visible, pressing and holding button

[D] will temporarily switch the indication to the relative humidity. Release the button

to switch back to the temperature indication.

To consult the sunrise and sunset times, press [SET] twice while in TME mode to enter

the Sun submode. The mode hand will point to the small 'S' which stands for Sun. Upon

activating this submode, the sunrise time will be shown by the hour and minute hands.

Refer to the date indicator to distinguish between morning and afternoon, and also

look at the decimals hand, which points upwards to indicate a sunrise, and downwards

to indicate a sunset.

Press button [C] to toggle between sunrise and sunset.

The second hand indicates the remaining time to the shown sunrise/sunset event. The

remaining time can be up to 24 hours and is shown by pointing anywhere between the 0

and 24 position on the second scale. As a graphical reminder, the latter position is

labeled with '24H'.

During the Sun submode, the right digital indicator will indicate the day length (period

of time between sunrise and sunset) with four digits. For example, an indication of

"1052" stands for a day length of 10 hours and 52 minutes.

In case that the weather data is invalid or the device cannot establish an Internet

connection, the temperature indication will change to two dashes. When in the Sun

submode and if the data is invalid or older than 30 hours, both the hour and minute

hands will point at the 9 o'clock position. The valid range of 30 hours allows for using

the sunrise/sunset times of the previous day as an approximate value in the event that

there is no Internet connection for longer periods of time. The second hand will point

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to the 9'clock position if the remaining time to the shown event is outside the range

from 0 to 24 hours. This helps to assess the validity of the shown sunrise/sunset times.

If needed, you can force a data refresh manually. While in TME mode, press and hold

button [D] for 5 seconds until you hear a beep. A message appears indicating either that

the refresh was successful or that the data could not be loaded. (This only works if the

weather information function is enabled and a location has been entered.)

Note that the Screen-On timer has a higher display priority and, when active, it will

overwrite the temperature or day length reading. In this case, press button [D] while in

TME mode (or Sun submode) to get the reading back for a few seconds.

Shortcut for swapping the locations

Long-press button [SET] while in Sun submode.

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2.7. Compass

If supported by the hardware, Cronosurf offers a compass function that runs as a

submode of the World Time mode. The availability of the compass is recognizable on

the mode indicator by a gray dot at the left of the World Time mode mark. If the

compass sensor is available, the gray dot will be visible and the compass function can

be started. Once started, the mode hand will point to this dot. (Otherwise, the gray dot

will not be visible and the compass function cannot be started.)

Starting the compass

To start the compass, change to the World Time mode and press button [D]. Both the

minute and the second hands align together to form the north pointer of the compass

needle, whereas the hour hand aligns to the opposite direction, hence pointing south.

Note that most Android devices need a compass calibration before the readings are

reliable. This consists generally of spinning the device in a figure 8 pattern. Please

make sure that you employ the proper method for your device.

Exiting the compass

To exit the compass, either press [D] again or change the watch mode. Otherwise, the

compass will stop automatically after 5 minutes of inactivity (1 minute on Wear

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devices). (You may press button [SET] to restart this 5 minute counter without changing

anything.)

Reference pointer (only PRO version)

While in compass submode, press button [C] to freeze the second hand on its actual

position. This will help you to comfortably monitor the deviation from a previously

established direction.

The app will save the reference value and retain it even after a restart of the device.

Press [C] again to release the hold.

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2.8. Presets for alarm and countdown

This function gives you a quick access to your favorite alarm and countdown times -

two each (four in the PRO version). To access the presets, press on the "P" symbol

below the watch. This will open a window showing all the presets together with the

current alarm and countdown settings at the top. You may now activate/start any

desired preset by touching it.

If you want to change a preset, first set the alarm or countdown time as needed. Then,

open again the presets window and overwrite the desired preset through long pressing

on it. The next long press will restore the default value.

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2.9. Battery level indicators

There are three different battery level indicators:

Analog manual through the second hand: Press and hold button [D] while in time

mode (TME). The second hand will show the battery level on the hour scale. The

12 o'clock position corresponds to 0%, while 10 o'clock corresponds to 100%.

Release the button to restore the timekeeping mode of the second hand.

Analog battery indicator: When this option is enabled under preferences, a small

triangle shows permanently the battery level on the hour scale, just as the second

hand in the previous point. While charging, its color will be white, otherwise the

color will be the same as the highlight colors of the watch face. The indicator

blinks when the battery level falls below 20% and the device is not charging.

Digital battery indicator: When this option is enabled under preferences, a digital

indication of the battery level appears on the left side of the watch face. While

charging, a charging symbol appears on the left side of the digits.

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2.10. Screen-On timer

In order to keep the screen for a longer time than the device screen timeout time, you

can use the inbuilt Screen-On timer. To activate it, open the graphical menu and press

the button that shows a sun and a timer symbol. The starting value is 5 minutes. Once

activated, it can be further adjusted through same button or by swiping* left or right on

the watch face. At each swipe, the timer will toggle through these possible settings:

OFF ↔ 5 minutes ↔ 15 minutes ↔ 30 minutes ↔ OFF

If the timer is active, its status will be indicated below the 24-hour dial by a sun symbol

and the remaining minutes.

* On Wear smartwatches, swiping is reserved for the system. Use the graphical menu instead.

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3. Disclaimer

THIS SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. THE AUTHOR

MAKES NO WARRANTIES, EXPRESS OR IMPLIED, THAT THE SOFTWARE IS FREE OF ERROR,

OR THAT IT WILL MEET YOUR REQUIREMENTS FOR ANY PARTICULAR APPLICATION. IT

SHOULD NOT BE RELIED ON FOR ANY PURPOSE WHOSE INCORRECT BEHAVIOR COULD

RESULT IN INJURY TO A PERSON OR LOSS OF PROPERTY. IF YOU DO USE THEM IN SUCH A

MANNER, IT IS AT YOUR OWN RISK. THE AUTHOR DISCLAIMS ALL LIABILITY FOR DIRECT,

INDIRECT, OR CONSEQUENTIAL DAMAGES RESULTING FROM THE USE OF THIS SOFTWARE.

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Copyright 2015 – 2019

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